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1、BRITISH STANDARD BS EN 610:1996 Tin and tin alloys Ingot tin The European Standard EN 610:1995 has the status of a British Standard ICS 77.120.60 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 610:1996 This British Standard, having be
2、en prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 April 1996 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference NFE/27 Draft for comment 92/35560 DC ISBN
3、 0 580 25353 8 Committees responsible for this British Standard The United Kingdom participation in the preparation of this European Standard was entrusted to Technical Committee NFE/27, Tin and tin alloys, upon which the following bodies were represented: Association of British Pewter Craftsmen Bri
4、tish Iron and Steel Producers Association Federation of the Electronics Industry ITRI Ltd. London Metal Exchange Metal Packaging Manufacturers Association Solder Makers Association Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:1
5、7 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 610:1996 BSI 07-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 6103 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 610:1996 ii B
6、SI 07-1999 National foreword This British Standard has been prepared by Technical Committee NFE/27 and is the English language version of EN 610:1995 Tin and tin alloys Ingot tin, published by the European Committee for Standardization (CEN). It supsersedes BS 3252:1986 which is withdrawn. The Unite
7、d Kingdom took an active part in the preparation of EN 610:1995. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity
8、from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 7 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendme
9、nt table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 610 July 1995 ICS 77.120.60 Descriptors: Tin, ingots, designation, specification, chemical composition,
10、grades: quality, sampling, marking English version Tin and tin alloys Ingot tin tain et alliages dtain tain en lingotZinn und Zinnlegierungen Zinn in Masseln This European Standard was approved by CEN on 1995-06-05. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stip
11、ulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard e
12、xists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards
13、bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central S
14、ecretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN 610:1995 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (
15、c) BSI EN 610:1995 BSI 07-1999 2 Foreword This European Standard has been prepared by Technical Committee CEN/TC 220, Tin and tin alloys, of which the Secretariat is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by
16、 endorsement, at the latest by January 1996, and conflicting national standards shall be withdrawn at the latest by January 1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germ
17、any, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Definitions3 3Ordering information3 4Requirements3 5Selection and preparation of samples for analysis3 6Analytical methods3 7Inspection
18、 documentation5 8Marking and labelling5 Annex A (normative) Rounding rules6 Annex B (normative) Method for sampling a batch of ingots for analysis6 Figure B.1 Sawing and sample ingots7 Table 1 Chemical composition and grade designation of ingot tin4 Table B.1 Sampling rate for batch of ingots6 Licen
19、sed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 610:1995 BSI 07-19993 1 Scope This European Standard specifies the requirements for the chemical composition, surface condition, sampling, analysis, inspection documentation and marking for five
20、grades of ingot tin. The grades of tin included in this European Standard are those which are traded internationally. 2 Definitions For the purposes of this standard the following definitions apply. 2.1 ingot cast, unwrought product in a form suitable only for remelting 2.2 batch series of ingots pr
21、oduced from a single uniform melt 2.3 bundle collection of ingots taken from one batch and secured by banding for the purposes of handling, shipment and storage 3 Ordering information The following information shall be supplied by the purchaser in the enquiry and/or order, to assist the supplier in
22、providing the correct material: a) the number of this European Standard (EN 610); b) the designation of the tin grade required (see Table 1); c) the individual nominal mass of the ingots; d) the total mass of ingots required; e) whether a specific ingot shape is required (see 4.2); f) whether a cert
23、ificate of analysis or a statement of conformity is required (see clause 7); g) the specific packaging requirements. 4 Requirements 4.1 Chemical composition The chemical composition of the ingots shall conform to the requirements for the appropriate grade given in Table 1. In expressing the results
24、for the analysis, the values obtained shall be rounded to the same number of decimal places as used in expressing the specified limit in Table 1. The rounding rules are given in Annex A. 4.2 Shape of ingots The shape of the ingots shall be at the discretion of the supplier, unless a specific shape i
25、s agreed between the purchaser and the supplier and is stated in the enquiry and/or order see 3 e). NOTEThe ingot shape should be such that the bundle of ingots remains stable when the banding is removed. 4.3 Surface condition of ingots The surface of the ingots shall be clean and free of holes and
26、pores. 5 Selection and preparation of samples for analysis When analysis is to be carried out to verify conformity of a batch of ingots with the composition requirements given in 4.1, the selection of the samples, and the preparation of the analysis samples, shall be in accordance with Annex B. 6 An
27、alytical methods For routine control purposes the samples selected and prepared in accordance with clause 5 shall be analysed by the use of recognized chemical or instrumental analytical methods. In cases of dispute concerning the results of chemical analysis, until the publication of a European Sta
28、ndard1) for the analysis of tin ingots, the analytical methods used shall be subject to agreement between the disputing parties and any independent arbitrator. 1) In course of preparation. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 6
29、10:1995 4 BSI 07-1999 Table 1 Chemical composition and grade designation of ingot tin Composition in % (m/m) Tin grade designation SnAlAsBiCdCuFePbSbZnTotal of all impurities min.max.max.max.max.max.max.max.max.max.max. Sn 99,99 Sn 99,95 Sn 99,93 Sn 99,90 Sn 99,85 99,99 99,95 99,93 99,90 99,85 0,000
30、5 0,0005 0,0005 0,0010 0,0010 0,0005 0,0040 0,004 0,030 0,030 0,0001 0,0050 0,005 0,010 0,030 0,0005 0,0005 0,0005 0,0010 0,0010 0,0005 0,005 0,010 0,030 0,050 0,0001 0,0025 0,003 0,005 0,010 0,0040 0,040 0,040 0,010 0,050 0,0010 0,015 0,040 0,040 0,050 0,0005 0,0005 0,0005 0,0010 0,0010 0,010 0,050
31、 0,070 0,100 0,150 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 610:1995 BSI 07-19995 7 Inspection documentation The supplier shall provide inspection documentation with each consignment of ingots. The documentation shall be as request
32、ed by the purchaser in the enquiry and order see 3 f), and shall be in accordance with either a) or b) as follows: a) certificate giving the chemical analysis specific to each batch in the consignment; or b) a statement of conformity of the consignment with the order requirements. NOTEThe statement
33、of conformity does not necessarily relate to specific tests carried out on the consignment. 8 Marking and labelling 8.1 Ingots Every ingot shall be marked with the following information: a) producers name or mark; and b) batch identification. 8.2 Bundles Every bundle shall have affixed a label givin
34、g all the following information: a) number of this European Standard (EN 610); b) tin grade designation (see Table 1); c) producers name or mark; and d) batch identification. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 610:1995 6 BSI
35、07-1999 Annex A (normative) Rounding rules For the purposes of determining conformity with compositional limits an observed value, or a calculated value, obtained from the analysis is rounded to the same number of decimal places as used in this European Standard in expressing the specified limit. Th
36、e following rules shall be used for rounding: a) if the figure immediately after the last figure to be retained is less than five, the last figure to be retained shall be kept unchanged; b) if the figure immediately after the last figure to be retained is equal to or greater than five, the last figu
37、re to be retained shall be increased by one. Annex B (normative) Method for sampling a batch of ingots for analysis B.1 Principle A number of ingots is randomly selected from the batch. Sawcuts are made systematically in the selected ingots and the resulting sawings are combined. Analysis samples ar
38、e obtained by splitting the aggregated sample. B.2 Materials and apparatus B.2.1 Steel wire brush B.2.2 Soft bristle brush B.2.3 Powered hacksaw, equipped with a steel blade for coarse cutting B.2.4 Large magnet B.2.5 Degreasing solvent B.2.6 Sample splitter, or equipment for coning and quartering B
39、.3 Procedure B.3.1 Selection of sample ingots from the batch According to the number of ingots in the batch, randomly select a number of sample ingots, in accordance with the ingot sampling rate given in Table B.1. Table B.1 Sampling rate for batch of ingots B.3.2 Preparation of sample ingots Ensure
40、 the sample ingots (B.3.1) are free of oil and grease. Clean the sample ingots by scratch brushing the surface, using the steel wire brush (B.2.1). Then use the soft brush (B.2.2) to remove any loose or detached surface contaminants. B.3.3 Sawing the sample ingots Saw each sample ingot individually
41、by the following procedure. Clamp the ingot in the vice of the hacksaw (B.2.3). Make three sawcuts through the complete cross-section of the ingot at sites one-quarter, two-quarters and three-quarters of the length L of the ingot, collecting all the resulting sawings see Figure B.1 a). If any oil is
42、 likely to be present, clean the sawings thoroughly in the degreasing solvent (B.2.5). Remove any free iron with the magnet (B.2.4). NOTE 1The two outer sawcuts should not be made through the end lugs of the ingot. If any sample ingot has end lugs which are longer than one-quarter the length of the
43、ingot, the two outer sawcuts should be made closer to the centre-cut, such that the full cross-section of the ingot is sampled see Figure B.1 b). NOTE 2Do not use lubricant in making the sawcuts, except where experience shows it will not vitiate sampling. NOTE 3If the ingots are of a size, or shape,
44、 which is such that the procedure described is not practicable, then an appropriate, systematic sawing procedure should be followed, which in cases of dispute should be agreed between the disputing parties. In this procedure the pattern of sawcuts should be made through the full cross-section of eac
45、h sample ingot. The sawings so produced should be sufficient to provide an aggregate analysis sample of minimum mass 100 g which is representative of the whole batch of ingots. Repeat these procedures for each of the sample ingots. Combine and mix all the sawings, to give a sample of sawings represe
46、ntative of the whole batch of ingots. B.3.4 Obtaining the sample for analysis Reduce the aggregated sample obtained in B.3.3, by means of the sample splitter or by coning and quartering (B.2.6), to obtain one, or more, representative samples of suitable size for analysis. Number of ingots in batchNu
47、mber of sample ingots 1 to 4 5 to 20 21 to 40 41 to 60 over 60 1 2 4 6 10 % of ingots in batch Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 610:1995 BSI 07-19997 Figure B.1 Sawing the sample ingots Licensed Copy: sheffieldun sheffieldu
48、n, na, Mon Nov 13 14:37:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 610:1996 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the
49、international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover.